Method of activating polymers
US3940377A · kind A · utility
15Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1972 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | Jun 19, 1992 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P5/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to the activation of polymers and more particularly to certain classes of high polymeric material which are not susceptible to dyeing or the like whereby the polymeric material is given a functional group which can react with dyes, monomeric materials, etc. Polymeric materials such as polyolefins, e.g. polypropylene, polyesters and polyvinylchloride are sulfonated by reaction with a sulfonating agent in the presence of a hydrocarbon and/or a chlorinated hydrocarbon. The resulting sulfonated polymer can then be easily dyed or can be reacted with monomers to obtain dyeable polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.